From 3d78ff7863eeea560b2429f727e9ce5fcbb18970 Mon Sep 17 00:00:00 2001
From: adam <adam@adbraun.lol>
Date: Tue, 29 Sep 2026 17:50:37 +0000
Subject: [PATCH] show board dates in UTC on the website

Board days are UTC epoch days (midnight UTC), but toLocaleDateString
formatted them in the viewer's timezone, so anyone west of UTC saw
every game dated the day before. Format them in UTC.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 www/html/wordle/game.html  | 3 +++
 www/html/wordle/games.html | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/www/html/wordle/game.html b/www/html/wordle/game.html
index 5c829c0..c490f53 100644
--- a/www/html/wordle/game.html
+++ b/www/html/wordle/game.html
@@ -316,8 +316,11 @@ async function loadBoard() {
 
     // If we know the exact epoch day and haven't set date text yet, show it
     if (finalEpoch !== null && !dateEl.textContent) {
+        // Epoch days start at midnight UTC, so format in UTC or viewers
+        // west of UTC see the previous day
         dateEl.textContent = new Date(finalEpoch * 86400 * 1000)
             .toLocaleDateString(undefined, {
+                timeZone: "UTC",
                 weekday: "long",
                 year: "numeric",
                 month: "long",
diff --git a/www/html/wordle/games.html b/www/html/wordle/games.html
index 705a53e..bdf1ac0 100644
--- a/www/html/wordle/games.html
+++ b/www/html/wordle/games.html
@@ -134,8 +134,11 @@
 
 <script>
 function formatDateFromEpochDays(epochDays) {
+  // Epoch days start at midnight UTC, so format in UTC or viewers
+  // west of UTC see the previous day
   const date = new Date(epochDays * 86400 * 1000);
   return date.toLocaleDateString(undefined, {
+    timeZone: "UTC",
     weekday: "short",
     year: "numeric",
     month: "short",